Declension table of ?taptavya

Neuter	Singular	Dual	Plural
Nominative	taptavyam	taptavye	taptavyāni
Vocative	taptavya	taptavye	taptavyāni
Accusative	taptavyam	taptavye	taptavyāni
Instrumental	taptavyena	taptavyābhyām	taptavyaiḥ
Dative	taptavyāya	taptavyābhyām	taptavyebhyaḥ
Ablative	taptavyāt	taptavyābhyām	taptavyebhyaḥ
Genitive	taptavyasya	taptavyayoḥ	taptavyānām
Locative	taptavye	taptavyayoḥ	taptavyeṣu

Compound taptavya -

Adverb -taptavyam -taptavyāt